Recommend a good E&M undergrad book that isn't Griffiths

Don't care for Griffiths, and I think it would make a lousy reference given how many important theorems, results, etc. are hidden in the problems rather than included normally. I'd like a book that ideally has derivations of all the relevant formula and CONCEPTUAL descriptions of phenomena, covering the same material Griffiths covers. Just better. I want it to prepare for the GRE and for personal betterment. Suggestions?

For conceptual understanding and a beautiful exposition of the unity of electricity and magnetism, see Schwartz, Classical Electrodynamics. It is more advanced than Purcell, but like it is written by a Nobel prize winner and is both intuitive and physical. It is a slim book that is intended to provide insights rather than covering the whole range of topics found in Griffiths. It is available inexpensively from Dover.

I like Dugdale's Essentials of Electromagnetism. It starts from Maxwell's equations as the big picture, then discusses the conditions under which eg. electrostatics or circuit theory are a excellent approximations.

I did my undergrad EM with Reitz' "Foundations of Electromagnetic Theory". I liked it, it's older than Griffiths' but the newer editions cover practically all of the same topics.

If you're looking for PGRE preparation, I'd suggest you work through the exams first and see what your weaknesses in EM are, then go grab one of those 1000 problems in E&M books and work through problems.